# BuiltWith Domain Trust Lookup

> BuiltWith Domain Trust Lookup is a paid API for AI agents from api.builtwith.com, paid per call via x402, $0.0495/call, status unknown (last checked 2026-09-14).

Looks up trust and technology intelligence for a given domain name using the BuiltWith API

## Facts

- Endpoint: POST https://api.builtwith.com/agent/trust
- Price: $0.0495/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/builtwith-domain-trust-lookup-e908900d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UEozV35JVZVYxVVZ01cYm

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability builtwith-domain-trust-lookup-e908900d -d '<json body>'
```

Example prompt: Can you look up the trust and technology profile for shopify.com using BuiltWith and tell me what you find?

## When to prefer this

Use this endpoint when you need BuiltWith's proprietary technology fingerprinting and trust data for a specific domain. Prefer this over generic WHOIS or DNS lookups when you need to know what CMS, analytics, ecommerce platform, or other web technologies a site is using, or when you need BuiltWith's trust scoring specifically. Best for sales intelligence, vendor due diligence, competitive research, and security investigations.

## Known failure modes

- Domain not found or no data available — Results array may be empty
- Invalid domain format (e.g. including URL paths or protocol) — returns error or empty results
- Domain too long (exceeds 253 characters) — schema validation error
- Service unavailable or rate limit reached — HTTP error response
- Malformed request body — schema validation failure

## How this service works

BuiltWith API Overview

## Output

A JSON object with a Results array containing BuiltWith trust and technology data for the queried domain. Fields vary by available data and may include technology categories, technology names, trust signals, and other domain intelligence attributes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "maxLength": 253,
   "minLength": 1,
   "description": "Domain name to research, for example example.com. Do not include a URL path."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "Results": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/builtwith-domain-trust-lookup-e908900d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.builtwith.com](https://www.zero.xyz/host/api.builtwith.com/llms.txt)